We report a patient with pustular psoriasis who developed interstitial pneumonitis after receiving weekly methotrexate (MTX) therapy at an average dose of 20 mg for 26 years. The patient responded dramatically to withdrawal of the drug and administration of corticosteroids. Pulmonary toxicity is a rare adverse effect of MTX therapy and is particularly uncommon in psoriatics. As interstitial pneumonitis is a potentially fatal but reversible complication, early respiratory symptoms even in patients on low-dose MTX treatment should be appropriately investigated.
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Univ Manchester, Salford Royal Hosp, Salford M6 8HD, Lancs, EnglandUniv Manchester, Salford Royal Hosp, Salford M6 8HD, Lancs, England
Warren, R. B.
Smith, R. L.
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Univ Manchester, Arc Epidemiol Unit, Manchester M13 9PT, Lancs, EnglandUniv Manchester, Salford Royal Hosp, Salford M6 8HD, Lancs, England
Smith, R. L.
Campalani, E.
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St Thomas Hosp, St Johns Inst Dermatol, Skin Therapy Res Unit, London SE1 7EH, EnglandUniv Manchester, Salford Royal Hosp, Salford M6 8HD, Lancs, England
Campalani, E.
Eyre, S.
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Univ Manchester, Arc Epidemiol Unit, Manchester M13 9PT, Lancs, EnglandUniv Manchester, Salford Royal Hosp, Salford M6 8HD, Lancs, England
Eyre, S.
Smith, C. H.
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St Thomas Hosp, St Johns Inst Dermatol, Skin Therapy Res Unit, London SE1 7EH, EnglandUniv Manchester, Salford Royal Hosp, Salford M6 8HD, Lancs, England
Smith, C. H.
Barker, J. N. W. N.
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St Thomas Hosp, St Johns Inst Dermatol, Skin Therapy Res Unit, London SE1 7EH, EnglandUniv Manchester, Salford Royal Hosp, Salford M6 8HD, Lancs, England
Barker, J. N. W. N.
Worthington, J.
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Univ Manchester, Arc Epidemiol Unit, Manchester M13 9PT, Lancs, EnglandUniv Manchester, Salford Royal Hosp, Salford M6 8HD, Lancs, England
Worthington, J.
Griffiths, C. E. M.
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Univ Manchester, Salford Royal Hosp, Salford M6 8HD, Lancs, EnglandUniv Manchester, Salford Royal Hosp, Salford M6 8HD, Lancs, England